Neutron Radiation Therapy and Pembrolizumab in Treating Participants With Advanced Urothelial Carcinoma

Phase II Trial of Neutron Radiotherapy With Concurrent Checkpoint Inhibitor Immunotherapy (Pembrolizumab) in Patients With Advanced Urothelial Carcinoma

This phase II trial studies how well neutron radiation therapy and pembrolizumab work in treating participants with urothelial carcinoma that has spread to other places in the body. Neutron radiation therapy uses high energy neutrons to kill tumor cells and shrink tumors. Immunotherapy with monoclonal antibodies, such as pembrolizumab, may help the body's immune system attack the cancer, and may interfere with the ability of tumor cells to grow and spread. Giving radiation therapy and pembrolizumab may work better than radiation alone in treating participants with urothelial carcinoma that has spread to other places in the body.

Study Overview

• Status: Active, not recruiting
• Conditions: Urothelial Carcinoma
• Intervention / Treatment: Other: Laboratory Biomarker Analysis; Biological: Pembrolizumab; Radiation: Radiation Therapy

Detailed Description

OUTLINE:

Participants receive pembrolizumab intravenously (IV) on days 1 and 22. On day 23, participants may undergo an optional tumor biopsy and receive 3-5 treatments of neutron radiation therapy over 2 weeks on days 23-42. Participants receive pembrolizumab IV on day 43 and continue per standard of care in the absence of disease progression or unacceptable toxicity.

After completion of study treatment, participants are followed up every 3 months.

• Study Type: Interventional
• Enrollment (Actual): 13
• Phase: Phase 2

Contacts and Locations

• Study Contact: Name: Clinical Research Coordinator; Phone Number: 206-897-2121; Email: radoncrn@uw.edu

Study Locations

• United States
  • Washington
    • Seattle, Washington, United States, 98109
      • Fred Hutch/University of Washington Cancer Consortium

Participation Criteria

Eligibility Criteria

• Ages Eligible for Study: 18 years and older (Adult, Older Adult)
• Accepts Healthy Volunteers: No

Description

Inclusion Criteria:

• Pathologically proven (either histologic or cytologic) diagnosis of urothelial carcinoma
• At least two sites of disease that are measurable by Response Evaluation Criteria in Solid Tumors (RECIST) 1.1 criteria
• Eligible for checkpoint inhibitor immunotherapy (pembrolizumab) per standard of care
• No history of autoimmune disease requiring systemic therapy (e.g. steroids or biologic agents)
• Absolute neutrophil count (ANC) ≥ 1500 /mcL
• Platelets ≥ 100,000/mcL
• Hemoglobin > 9 g/dL
• Creatinine ≤ 1.5 x upper limit of normal (ULN) OR ≥ 60 mL/min
• Total bilirubin ≤ 1.5 ULN OR direct bilirubin ≤ ULN if total bilirubin > 1.5 x ULN
• Aspartate aminotransferase (AST) and alanine aminotransferase (ALT) ≤ 2.5 x ULN OR < 5 x ULN if patient has liver metastasis
• Albumin >= 2.5 g/dL
• International normalized ratio (INR) or PT ≤ 1.5 x ULN unless on anticoagulation therapy, in which case prothrombin time (PT) or partial thromboplastin time (PTT) should be in the therapeutic range
• PTT ≤ 1.5 x ULN unless on anticoagulation therapy, in which case PT or PTT should be in the therapeutic range
• Eligible for neutron radiation treatment to 1-3 sites of metastatic disease (lesions do not have to be symptomatic)
• No steroids for at least 2 weeks prior to enrollment, and patient must not be expected to require steroids during the study period
• Zubrod performance status 0-2
• Patient must sign study specific informed consent prior to study entry
• Patients who are sexually active must use medically acceptable forms of contraception
• Life expectancy must be > 3 months

Exclusion Criteria:

• Has a known history of active TB (Bacillus tuberculosis)
• Hypersensitivity to pembrolizumab or any of its excipients
• Has a known additional malignancy that is progressing or requires active treatment
• Has received prior therapy with an anti-PD-1, anti-PD-L1, or anti-PD-L2 agent
• Has a known history of human immunodeficiency virus (HIV) (HIV 1/2 antibodies)
• Has known active hepatitis B (e.g., hepatitis B virus surface antigen [HBsAg] reactive) or hepatitis C (e.g., hepatitis C virus [HCV] ribonucleic acid [RNA] [qualitative] is detected)
• Has known psychiatric or substance abuse disorders that would interfere with cooperation with the requirements of the trial
• Has a history or current evidence of any condition, therapy, or laboratory abnormality that might confound the results of the trial, interfere with the subject's participation for the full duration of the trial, or is not in the best interest of the subject to participate, in the opinion of the treating investigator
• Has known history of, or any evidence of active, non-infectious pneumonitis
• Has an active infection requiring systemic therapy
• Has received a live vaccine within 30 days of planned start of study therapy
• Has known active central nervous system (CNS) metastases and/or carcinomatous meningitis; subjects with previously treated brain metastases may participate provided there is no evidence of new or enlarging brain metastases, and are not using steroids for at least 7 days prior to trial treatment; this exception does not include carcinomatous meningitis which is excluded regardless of clinical stability

Study Plan

How is the study designed?

Design Details

• Primary Purpose: Treatment
• Allocation: N/A
• Interventional Model: Single Group Assignment
• Masking: None (Open Label)

Number of Arms

1

Arms and Interventions

Participant Group / Arm

Intervention / Treatment

Experimental: Treatment (Pembrolizumab, neutron radiation therapy); Participants receive pembrolizumab IV on days 1 and 22. On day 23, participants may undergo an optional tumor biopsy and receive 3-5 treatments of neutron radiation therapy over 2 weeks on days 23-42. Participants receive pembrolizumab IV on day 43 and continue per standard of care in the absence of disease progression or unacceptable toxicity.

Other: Laboratory Biomarker Analysis; Correlative studies; Biological: Pembrolizumab; Given IV; Other Names: Keytruda; MK-3475; Lambrolizumab; SCH 900475; Radiation: Radiation Therapy; Undergo neutron radiation therapy; Other Names: Cancer Radiotherapy; Irradiate; Irradiated; Radiotherapeutics; RT; Therapy, Radiation; irradiation; radiotherapy; RADIATION

What is the study measuring?

Primary Outcome Measures

Outcome Measure	Measure Description	Time Frame
Overall response rate per immune-modified response evaluation criteria in solid tumors	Overall response rate will be calculated as the percentage of patients achieving a partial response or complete response, and will be presented along with the 95% confidence interval (CI).	Up to 3 years

Secondary Outcome Measures

Outcome Measure	Measure Description	Time Frame
Overall survival	This will be estimated with the Kaplan and Meier method with 95% CI obtained using Greenwood estimates of variance.	Up to 3 years
Progression-free survival	This will be estimated with the Kaplan and Meier method with 95% CI obtained using Greenwood estimates of variance.	Up to 3 years

Collaborators and Investigators

• Sponsor: University of Washington
• Investigators: Principal Investigator: Jing Zeng, Fred Hutch/University of Washington Cancer Consortium

Study record dates

Study Major Dates

• Study Start (Actual): January 17, 2019
• Primary Completion (Actual): November 1, 2023
• Study Completion (Estimated): May 1, 2024

Study Registration Dates

• First Submitted: March 27, 2018
• First Submitted That Met QC Criteria: March 27, 2018
• First Posted (Actual): April 3, 2018

Study Record Updates

• Last Update Posted (Actual): November 15, 2023
• Last Update Submitted That Met QC Criteria: November 13, 2023
• Last Verified: November 1, 2023

More Information

Terms related to this study

• Additional Relevant MeSH Terms: Neoplasms by Histologic Type; Neoplasms; Neoplasms, Glandular and Epithelial; Carcinoma; Carcinoma, Transitional Cell; Molecular Mechanisms of Pharmacological Action; Antineoplastic Agents; Antineoplastic Agents, Immunological; Immune Checkpoint Inhibitors; Pembrolizumab
• Other Study ID Numbers: 9940 (Other Identifier: Fred Hutch/University of Washington Cancer Consortium); NCI-2018-00412 (Registry Identifier: CTRP (Clinical Trial Reporting Program)); RG3118000 (Other Identifier: Fred Hutch/University of Washington Cancer Consortium)

Plan for Individual participant data (IPD)

• Plan to Share Individual Participant Data (IPD)?: NO

Drug and device information, study documents

• Studies a U.S. FDA-regulated drug product: Yes
• Studies a U.S. FDA-regulated device product: Yes